refactor: improve binding, performance, and type safety

- Implement ShouldBind with support for JSON, Form, WANF, and GOB formats
- Add ShouldBindForm, ShouldBindGOB, and helper functions for form binding
- Use fmt.Appendf instead of fmt.Sprintf for better performance
- Replace interface{} with any for modern Go style
- Use maps.Copy for cleaner header copying
- Update strings.SplitSeq to use range over strings.Seq
- Remove deprecated placeholder comments and add proper implementations
- Fix reflect.Pointer usage for Go 1.22+ compatibility

touka.go

@@ -12,7 +12,7 @@ const (
 	defaultMemory = 32 << 20 // 32 MB, Gin 的默认值，用于 ParseMultipartForm
 )
 
-type H map[string]interface{} // map简写, 类似gin.H
+type H map[string]any // map简写, 类似gin.H
 
 type Handle func(http.ResponseWriter, *http.Request, Params)